“The Holy Spirit is the Mind of the Atonement. (T-5.I.6)”
The Holy Spirit is the Essence, the means by which we are guided to accept Atonement. He is the Voice for God, the Universal Inspiration. His way back is the one that we follow to a whole new beginning in life. Salvation is ours, and soon (we hope) after that, Awakening is ours as well.
The Holy Spirit was created to lead us back home. According to ACIM, He didn’t exist prior to the illusory separation of us, God’s children. He was the Answer, even as Jesus became the entity in charge of first carrying out plans that would save others.
The Holy Spirit speaks to us through intuition, nudges and hints, deep feelings that just won’t go away, a chance word from another that takes on unusual meaning for us. His ways of guidance are manifold, but of one thing we may be sure: He chooses ways that we ourselves, though no one else (in all probability) will recognize as right for us. He knows us intimately; he knows what we are ready to hear. And he chooses our part in the plan through a knowledge of that which we have which will most benefit the world.
We never have any reason to fear what the Holy Spirit tells us. We only have to listen and follow. The life we develop will be beyond our wildest imaginings.